Portable elevated oven



UNITED sTATEs PATENT oEEioE.'

P. KILLIN, OF MOUNT HEALTHY, OHIO.

PORTABLE ELEVATED OVEN.

Specication of Letters Patent No. 8,415, dated October '7, 1851.

T0 all whom t may concern Be it known that I, PATRICK KILLIN, of Mount Healthy, in the county of Hamilton and State of Ohio, have invented a new and useful Improvement in Summer Stoves for Baking and other Purposes; and I do hereby declare that the following is a full, clear, and exact description of my invention, reference being had to the accompanying drawing, which forms part of this specification and in which- Y Figure l represents a view in perspective of my portable elevated oven and Fig. 2 is a vertical cross section of the same.

My oven is composed essentially of two compartments the one above the other; in the upper the articles to be cooked are placed; the lower acts as a receiver into which the gases are conducted after they have given off a portion of their heat in their passage through radiating flues projecting upward into the body of the baking compartment, and from which they are discharged; the gases and flame in passing from the receiver through the ascending pipe, are conducted directly against the bottom of a boiler placed on the pot hole in the top of the stove, after which they are conducted by the descending iiue to the chimney. rllhe whole constitutes a convenient portable auxiliary stove which can be heated by the ordinary earthern or iron furnaces in common use.

In the accompanying drawing A is thel structed of tin plate or some other material` which has good reflecting surfaces; it is furnished at each end with doors a, a, by means of which the articles to be baked or heated are introduced and withdrawn. The bottom and top of the base A are each perforated with a hole the one in the top being the larger and directly above that in the bottom; a pipe l) is projected from the hole in the bottom, through that in the top, into the body of the baking compartment B and to within a short distance of its top; this pipe is of the same size as the hole in the bottom of the base to which it is made fast. A second pipe c, equal in size with the hole in the top of the base A, is inserted over the smaller pipe, its top being a short distance above the open upper extremity of the smaller pipe, and an opening or pot-hole is made `in the top of the oven through which a tea kettle or other culinary utensils can be inserted. This opening is fitted with a cover Z by which the open extremity of the larger pipe 0 is closed when the tea-kettle is withdrawn. The base A is also fitted at its side with an orifice c tov which when necessary a pipe may be adapted to increase the draft. The interior of the baker B is fitted with shelves having openings through them to admit the pipes.

The apparatus thus described may be applied to a stove or to the common earthen or iron furnaces; the heated gases generated by the burning fuel pass upward through the pipe b and return downward through the annular space included between the outer and inner pipes, they are received into the base A whence they issue through the ori ice e; as the gases pass through the pipes the heat is radiated from them to the upper part of the oven while the base distributes the heat equally at its bottom. The top of the outer pipe where the ascending currents of gas are turned downward, is the hottest, and hence a tea-kettle or other culinary utensil, placed upon it may be quickly heated while the oven is used for baking.

It will be perceived that this elevated portable oven is peculiarly adapted to open furnaces, as its lower compartment prevents the flame from acting directly upon the bottom of the oven while at the same time it tends to distribute the heat equally throughout the entire baker; in this it is aided by the radiating pipes which distribute the heat to the upper part of the baking compartment. It will also be perceived that by this arrangement of flues the gas is compelled to descend before leaving the apparatus, and hence the colder portions will pass 0E first. I do not limit myself to a' single set of radiating pipes but intend to increase the number as the size of my oven may render it expedient.

What I claim as my invention and desire to secure by Letters Patent is- The arrangement as herein described of the inner and outer concentric tubes with respect to the oven and pot hole as described,

whereby the oven is equally heated by ya small fire, and the heat is directed bythe inner upright pipe against the bottom of the kettle or other Vessel, thus enabling the user to conduct simultaneously the several operations of baking and boiling with a small fire and with economy of fuel.

In testimony whereof I have hereunto sub scribed my name.

PATRICK KILLIN.

Witnesses:

I. S. MoCAsH7 E. W. HOFFNER. 

